ipv6: Fix may be used uninitialized warning in rt6_check
authorSteffen Klassert <steffen.klassert@secunet.com>
Fri, 25 Aug 2017 07:05:42 +0000 (09:05 +0200)
committerDavid S. Miller <davem@davemloft.net>
Sat, 26 Aug 2017 00:05:27 +0000 (17:05 -0700)
rt_cookie might be used uninitialized, fix this by
initializing it.

Fixes: c5cff8561d2d ("ipv6: add rcu grace period before freeing fib6_node")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv6/route.c

index a9d3564caf49c1906a73266fe1b5a713438d5414..48c8c92dcbd39263b97672f123dfa63a8c6860da 100644 (file)
@@ -1289,7 +1289,7 @@ static void rt6_dst_from_metrics_check(struct rt6_info *rt)
 
 static struct dst_entry *rt6_check(struct rt6_info *rt, u32 cookie)
 {
-       u32 rt_cookie;
+       u32 rt_cookie = 0;
 
        if (!rt6_get_cookie_safe(rt, &rt_cookie) || rt_cookie != cookie)
                return NULL;